\nEnunciado<\/b><\/span><\/p>\n
Observa as retas r<\/em> e s<\/em> representadas nos referenciais da figura.<\/p>\n
$\"\"$ <\/a><\/p>\n
\n
Quais s\u00e3o as coordenadas dos pontos A, B, C e D pertencentes \u00e0 reta r<\/em>?
O que t\u00eam em comum?<\/li>\n
Escreve uma equa\u00e7\u00e3o da reta r<\/em>.<\/li>\n
Indica as coordenadas dos pontos E e F pertencentes \u00e0 reta s<\/em>.<\/li>\n
Indica o valor de
\\[\\frac{{ordenada\\,do\\,ponto\\,F – ordenada\\,do\\,ponto\\,E}}{{abcissa\\,do\\,ponto\\,F – abcissa\\,do\\,ponto\\,E}}\\]<\/li>\n
Escreve uma equa\u00e7\u00e3o da reta s<\/em>.<\/li>\n<\/ol>\n
Resolu\u00e7\u00e3o >><\/a><\/span><\/div><\/div>\n\n
\nResolu\u00e7\u00e3o<\/b><\/span><\/p>\n
\n
Observa as retas r<\/em> e s<\/em> representadas nos referenciais da figura.<\/p>\n<\/blockquote>\n
$\"\"$ <\/a><\/p>\n
\u00a0<\/p>\n
\n
As coordenadas dos pontos A, B, C e D s\u00e3o as seguintes: \$A\\left( {3,5} \\right)\$, \$B\\left( {3,2} \\right)\$, \$C\\left( {3,0} \\right)\$\u00a0e \$D\\left( {3, – 3} \\right)\$.
Os pontos t\u00eam a mesma abcissa.

<\/li>\n
Uma equa\u00e7\u00e3o da reta r<\/em>: \$x = 3\$.

<\/li>\n
As coordenadas dos pontos E e F s\u00e3o as seguintes: \$E\\left( { – 2, – 1} \\right)\$ e \$F\\left( {0,3} \\right)\$.

<\/li>\n
C\u00e1lculo do valor da express\u00e3o dada:
\\[\\frac{{ordenada\\,do\\,ponto\\,F – ordenada\\,do\\,ponto\\,E}}{{abcissa\\,do\\,ponto\\,F – abcissa\\,do\\,ponto\\,E}} = \\frac{{3 – \\left( { – 1} \\right)}}{{0 – \\left( { – 2} \\right)}} = \\frac{4}{2} = 2\\]<\/li>\n
Ora, o declive da reta r \u00e9 \${a_r} = \\frac{{3 – \\left( { – 1} \\right)}}{{0 – \\left( { – 2} \\right)}} = \\frac{4}{2} = 2\$ e a ordenada na origem \u00e9 \${b_r} = 3\$ (ordenada do ponto B).
Assim, \$y = 2x + 3\$ \u00e9 uma equa\u00e7\u00e3o da reta s<\/em>.<\/li>\n<\/ol>\n<< Enunciado<\/a><\/span><\/div><\/div>\n\n","protected":false},"excerpt":{"rendered":"
Enunciado Resolu\u00e7\u00e3o Enunciado Observa as retas r e s representadas nos referenciais da figura. Quais s\u00e3o as coordenadas dos pontos A, B, C e D pertencentes \u00e0 reta r?O que t\u00eam em comum? Escreve...<\/p>\n","protected":false},"author":1,"featured_media":25133,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[100,97,709],"tags":[424,345,344],"series":[],"class_list":["post-25129","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-8--ano","category-aplicando","category-graficos-de-funcoes-afins","tag-8-o-ano","tag-funcao-afim","tag-grafico"],"views":73,"jetpack_featured_media_url":"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2023\/04\/8_Pag173-T4_520x245.png","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts\/25129","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=25129"}],"version-history":[{"count":0,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts\/25129\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/media\/25133"}],"wp:attachment":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=25129"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25129"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25129"},{"taxonomy":"series","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fseries&post=25129"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}